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Compressor thermal overload open in heat mode

Hey guys,
Hoping you could steer me in the right direction. I'm working on a heat pump in heat mode. Pressures are good while I'm there. Indoor coil clean, blower good. Issue is compressor is shutting off on internal overload, around the time when the outdoor temp drops.
House has two systems. I had to change the outdoor txv on the other system. (Pressures were way off on that one, which made it easy to diagnos. Runs like a champ now)
I'm thinking this system is doing the same thing( faulty TXV- closing too much, starving the compressor, causing it to overheat), just not as pronounced as the other system.
Thanks for the help brothers.

"The bitterness of poor quality remains long after the sweetness of low price is forgotten". --Benjamin Franklin
"Don't argue with an idiot, they will drag you down to their level and beat you with experience". --Mark Twainhttp://www.campbellmechanical.com

Didn't check that. I had my hands full working on other system at the time. Amp draw would be high on a comp that was eventually going to open on overload?

Compressor is overheating for some reason. Usually high amp draw due to compressor bearings failing or lack of cooling due to high superheat.

"The bitterness of poor quality remains long after the sweetness of low price is forgotten". --Benjamin Franklin
"Don't argue with an idiot, they will drag you down to their level and beat you with experience". --Mark Twainhttp://www.campbellmechanical.com